Worksheet to teach balancing equations               Name __________________

 

Directions:  

1. Start Internet Explorer go to Classic Chembalancer.

2. Click ‘Directions’.  Read and understand the directions.

3. Click ‘OK’.

4. Click on ‘Start Game’

5. Try entering some numbers in the text boxes in front of each molecule.  What happens?

6. If you forget the directions, click on the ‘How to Play the Game’ link.  Click ‘OK’ when you finish reading them to return to the game.

7. When you think you have typed the right numbers in all the boxes, click the ‘Balanced’ button.

8. If you didn’t get it right, try again.

9. If you did get it right, then fill in the correct answers on this worksheet for #1.

10. Repeat steps 7-9 for the other 10 questions. 

11. Now do the two problems on the back of this worksheet.  You can draw the molecules just like the program did to figure out the answer.

 

Questions

Fill in the blanks below as you go though the game.  This is so I have a record that you did your assignment.

 

1.   _____ Fe  +  _____ S  -->  _____ FeS

 

2.  _____ H2   +  _____ Cl2  -->  _____ HCl

 

3. _____ Mg  +  _____ O2  -->   _____  MgO

 

4. _____ O2  +  _____  H2 -->   _____ H2O

 

5. _____ HgO -->  _____ Hg  +  _____  O2

 

6. _____ Ca  +  _____  H2O  -->  _____  Ca(OH)2  +   _____ H2

 

7.  _____  CH4  +  _____  O2  -->   _____ CO2  +  _____ H20

 

8.  _____  Na2O2  +   _____  H2SO4  -->   _____  Na2SO4  +   _____  H2O2

 

9. _____  N2  +   _____  H2  -->   _____  NH3

 

10.   _____  Al  +   _____  O2  -->   _____  Al2O3

 

11.  _____  KMnO4  -->   _____  K2O  +   _____   MnO  +   _____  O2

 

 

 

 

Draw the molecules just like the program did to figure out the answer to #12 and #13.

 

12.  _____  Na  +   _____  H2O  -->   _____  NaOH  +   _____  H2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fact for #12: Sodium metal, Na, is stored in kerosene so it won't react with water vapour.  When added to water it reacts quickly to make hydrogen gas.

 

 

13.  _____  H2SO4  +  _____  NaOH  -->  Na2SO4  +  _____   H2O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fact for #13: This is an example of an acid base reaction.  Acid + base --> Salt + Water  

 

©2005 Sulan Dun.  Legal . Privacy statement.  This worksheet accompanies the Classic Chembalancer game which can be found http://funbasedlearning.com/chemistry/default.htm